In R, objects can be of different class such as vector, list, dataframe, ts, etc. When you load a dataset into R, it may not necessarily be a time series object. We can use the
is.ts() function to test if the given object is a time series (ts) object or not.
Below we perform this test on all the objects we’ve created so far in this course.
As you can see, all objects return TRUE except
sp_vector which is a vector.